| # SPDX-License-Identifier: GPL-2.0 |
| |
| # List of files in the vdso, has to be asm only for now |
| |
| obj-vdso32 = sigtramp.o gettimeofday.o datapage.o cacheflush.o note.o getcpu.o |
| |
| # Build rules |
| |
| ifdef CROSS32_COMPILE |
| VDSOCC := $(CROSS32_COMPILE)gcc |
| else |
| VDSOCC := $(CC) |
| endif |
| |
| CC32FLAGS := |
| ifdef CONFIG_PPC64 |
| CC32FLAGS += -m32 |
| endif |
| |
| targets := $(obj-vdso32) vdso32.so vdso32.so.dbg |
| obj-vdso32 := $(addprefix $(obj)/, $(obj-vdso32)) |
| |
| GCOV_PROFILE := n |
| KCOV_INSTRUMENT := n |
| UBSAN_SANITIZE := n |
| |
| ccflags-y := -shared -fno-common -fno-builtin -nostdlib \ |
| -Wl,-soname=linux-vdso32.so.1 -Wl,--hash-style=both |
| asflags-y := -D__VDSO32__ -s |
| |
| obj-y += vdso32_wrapper.o |
| extra-y += vdso32.lds |
| CPPFLAGS_vdso32.lds += -P -C -Upowerpc |
| |
| # Force dependency (incbin is bad) |
| $(obj)/vdso32_wrapper.o : $(obj)/vdso32.so |
| |
| # link rule for the .so file, .lds has to be first |
| $(obj)/vdso32.so.dbg: $(src)/vdso32.lds $(obj-vdso32) FORCE |
| $(call if_changed,vdso32ld) |
| |
| # strip rule for the .so file |
| $(obj)/%.so: OBJCOPYFLAGS := -S |
| $(obj)/%.so: $(obj)/%.so.dbg FORCE |
| $(call if_changed,objcopy) |
| |
| # assembly rules for the .S files |
| $(obj-vdso32): %.o: %.S FORCE |
| $(call if_changed_dep,vdso32as) |
| |
| # actual build commands |
| quiet_cmd_vdso32ld = VDSO32L $@ |
| cmd_vdso32ld = $(VDSOCC) $(c_flags) $(CC32FLAGS) -o $@ -Wl,-T$(filter %.lds,$^) $(filter %.o,$^) |
| quiet_cmd_vdso32as = VDSO32A $@ |
| cmd_vdso32as = $(VDSOCC) $(a_flags) $(CC32FLAGS) -c -o $@ $< |
| |
| # install commands for the unstripped file |
| quiet_cmd_vdso_install = INSTALL $@ |
| cmd_vdso_install = cp $(obj)/$@.dbg $(MODLIB)/vdso/$@ |
| |
| vdso32.so: $(obj)/vdso32.so.dbg |
| @mkdir -p $(MODLIB)/vdso |
| $(call cmd,vdso_install) |
| |
| vdso_install: vdso32.so |
